/*#############################################################################
## Author: Shaun Reed                                                        ##
## Legal: All Content (c) 2025 Shaun Reed, all rights reserved               ##
##                                                                           ##
## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com                     ##
##############################################################################
*/
#ifndef SSD1306_H
#define SSD1306_H

#include <esp_lcd_panel_ssd1306.h>

// According to specific display hardware.
// https://www.digikey.com/en/products/detail/winstar-display/WEA012864DWPP3N00003/20533255
#define SCREEN_WIDTH           128  // OLED display width, in pixels.
#define SCREEN_HEIGHT          64  // OLED display height, in pixels.

// According to SSD1306 datasheet.
// https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
#define I2C_HW_ADDR            0x3C
#define LCD_PIXEL_CLOCK_HZ     (400 * 1000)
// Bit number used to represent command and parameter
#define LCD_CMD_BITS           8
#define LCD_PARAM_BITS         8

/**
 * Example of implementing the IPanelDevice interface for SSD1306 LCD device.
 */
struct SSD1306 {
  /// SSD1306 configuration structure.
  esp_lcd_panel_ssd1306_config_t ssd1306_config_;
};

/// Initializes the ESP LCD panel handle for the SSD1306 device.
void SSD1306_init_panel(esp_lcd_panel_dev_config_t &config,
                esp_lcd_panel_io_handle_t io,
                esp_lcd_panel_handle_t &panel) override
{
    ESP_ERROR_CHECK(esp_lcd_new_panel_ssd1306(io, &config, &panel));
}

/**
 * Construct a new SSD1306 device.
 *
 * @param i2c I2C master bus to manage this device.
 */
void SSD1306_init(i2c_master_bus_handle_t &i2c) {
    SSD1306_config_init(i2c, {.height = SCREEN_HEIGHT}, SCREEN_WIDTH, SCREEN_HEIGHT)
}

/**
 * Construct a new SSD1306 device given a specific SSD1306 configuration.
 *
 * @param i2c I2C master bus to manage this device.
 * @param vendor_config SSD1306 vendor configuration.
 * @param width Width of the device screen in pixels.
 * @param height Height of the device screen in pixels.
 */
SSD1306_config_init(//TODO: panel_device_t* device,
        i2c_master_bus_handle_t &i2c,
        esp_lcd_panel_ssd1306_config_t vendor_config,
        int width,
        int height
)  {
    /* TODO:
    device->init_panel(
        i2c,
        vendor_config,
        (esp_lcd_panel_io_i2c_config_t) {
            .dev_addr = I2C_HW_ADDR,
            // User data to pass to the LVGL flush_ready callback.
            // See IPanelDevice::lvgl_flush_ready_cb
            .user_ctx = nullptr,
            .control_phase_bytes = 1,
            .dc_bit_offset = 6,
            .lcd_cmd_bits = LCD_CMD_BITS,
            .lcd_param_bits = LCD_PARAM_BITS,
            .scl_speed_hz = LCD_PIXEL_CLOCK_HZ,
        },
        width,
        height
    )
    */
}

/**
 * Provides the SSD1306 vendor configuration to IPanelDevice consumers.
 *
 * @return Address of the SSD1306 vendor configuration structure.
 */
void *SSD1306_vendor_config() override
{
  return &ssd1306_config_;
}

#endif // SSD1306_H